Enable scalariform
Merge pull request #905 from twitter/jco/scalariform

Enable scalariform
Run the test target, so the tests are reformatted
Fix #906
Merge pull request #907 from twitter/scala-riform-test

Run the test target, so the tests are reformatted
Merge pull request #908 from twitter/alltoallfix

Fix #906
Some minor improvements to typed joining code
Merge pull request #909 from twitter/typed-pipe-change

Some minor improvements to typed joining code
Merge and format